Power converter

Abstract

Power converter (1), comprising: - a case (2), - wherein the housing (2) has a handle (7) on a first housing side (3), - wherein connections (4) of the power converter (1) are provided on the first housing side (3), - wherein the housing (2) has a recessed handle (6) on a second housing side (5) opposite the first housing side (3), - wherein the housing (2) has openings (11) on the first housing side (3), and - wherein the handle (7) has openings (12) on the mounting side (13) facing one of the first housing side (3) of the housing (2) which correspond to the openings (11) of the first housing side (3).

Description

[0001] The invention relates to a power converter.

[0002] AU 2016201851 A1 discloses a power converter with a housing. The housing has a handle on a first housing side. Connections of the power converter are provided on the first housing side. Another handle is provided on a second housing side, which is opposite the first housing side.

[0003] DE 35 25 583 A1 discloses a power converter with handles and recessed grips on the housing opposite one another.

[0004] The invention is based on the object of providing a power converter that is as easy to handle as possible.

[0005] The power converter according to the invention can be, for example, a frequency converter or a regenerative power unit. A regenerative power unit feeds electrical energy / power, which is present, for example, in an intermediate circuit, back into a supply network.

[0006] The power converter has a housing, for example a one-piece or multi-piece metal housing.

[0007] A handle is provided on a first side of the housing. The handle is designed so that it can be grasped with one hand by a person handling or transporting the power converter.

[0008] Further connections of the power converter are provided on the first side of the housing, for example connections for electrically connecting the power converter to a three-phase network / supply network / DC link network.

[0009] A recessed grip is provided on a second housing side, opposite the first housing side. The recessed grip is designed so that the person handling or lifting the power converter can place their fingers in the recessed grip and grasp the handle with their other hand, thus enabling easy handling or transport of the power converter.

[0010] The housing has openings on the first housing side through which, for example, cooling air can flow. The handle has openings on a mounting side facing the first housing side of the housing, which can be mechanically connected to the first housing side. These openings correspond to the openings on the first housing side in such a way that at least some of the openings on the first housing side are not closed.

[0011] According to one embodiment, the handle simultaneously forms a support surface for cables or the handle has a support surface, wherein the cables lead to the terminals of the power converter.

[0012] According to one embodiment, the support surface for the cables has a number, for example between 10 and 20, of openings, wherein the openings are provided to fix the cables, in particular by means of cable ties.

[0013] According to one embodiment, the grip recess has a rectangular cross-section.

[0014] According to one embodiment, the grip recess defines a cuboid-shaped volume.

[0015] According to one embodiment, the grip recess has a width in a range between 5 cm and 20 cm, and / or the grip recess has a height in a range between 1.5 cm and 10 cm, and / or the grip recess has a depth in a range between 1 cm and 10 cm.

[0016] According to one embodiment, the power converter has a fan, wherein an air flow caused by the fan flows through openings in the second housing side.

[0017] According to one embodiment, the grip recess or one side of the grip recess delimits an installation space of the fan or serves to guide the air of the fan into or out of the housing, in particular in the direction of the heat sink.

[0018] According to one embodiment, the power converter has a weight that is greater than 8 kg, preferably between 10 kg and 20 kg.

[0019] According to one embodiment, the power converter has low-voltage connections on the second housing side, to which, for example, components with a 24 V power supply or voltage level can be connected, such as I / O connections, rotary encoders, etc.

[0020] According to one embodiment, openings are provided on an inner side of the grip recess, which allow an exchange of air between an interior and an exterior of the housing.

[0021] According to one embodiment, the grip recess does not extend across the entire width of the housing. The grip recess can be laterally limited by a housing side running perpendicular to the grip recess.

[0022] According to one embodiment, the handle and the grip recess are arranged at a substantially identical housing height. In particular, both the handle and the grip recess can be arranged in an upper half relative to the housing height.

[0023] The invention is described in detail below with reference to the drawings. Fig. 1 a view of a frequency converter from a first perspective, Fig. 2 an enlarged view of a connection area of ​​the frequency converter with a handle, and Fig. 3 a view of the frequency converter from Fig. 1 from a second perspective.

[0024] Fig. 1 shows a power converter 1 with a housing 2, wherein the housing 2 has a handle 7 on a first housing side 3 and a handle recess 6 on a second housing side 5, which is opposite the first housing side 3, see also Fig. 3, wherein the handle 7 and the recessed grip 6 enable easy handling of the power converter 1.

[0025] Fig. 2 shows an enlarged view of a connection area of ​​the frequency converter on the first housing side 3 with the handle 7.

[0026] The first housing side 3 provides electrical connections 4 of the power converter 1, which serve to connect the power converter 1 to a three-phase network / supply network / intermediate circuit. The handle 7 has a support surface 8 for cables 9, which lead to the connections 4 of the power converter 1 and, for example, electrically conduct phases of the three-phase network.

[0027] The support surface 8 has a plurality of openings 10, wherein the openings 10 are provided to fix the cables 9 by means of cable ties.

[0028] Referring to Fig. 1, the housing 2 has openings 11 on the first housing side 3, wherein the handle 7 has openings 12 on a mounting side 13 facing the first housing side 3 of the housing 2, which openings correspond to the openings 11 of the first housing side 3.

[0029] Referring to Fig. 3, the grip recess 6 has a rectangular cross-section and delimits a cuboid-shaped engagement volume into which, for example, fingers can be inserted when handling the power converter 1.

[0030] Openings 17 are provided on an inner side of the grip recess 6, which allow air exchange between an interior and exterior of the housing.

[0031] The grip recess 6 has a width in a range between 5 cm and 20 cm, a height in a range between 1.5 cm and 10 cm, and a depth in a range between 1 cm and 10 cm.

[0032] The grip recess 6 does not extend over the entire width of the housing 2. The grip recess 6 is laterally limited by a left side of the housing running perpendicular to the grip recess 6.

[0033] The handle 7 and the grip recess 6 are arranged at a substantially identical housing height in an upper half of the housing 2.

[0034] Referring to Fig. 3, the power converter 1 has a fan 14, wherein an air flow caused by the fan 14 flows through openings 15 of the second housing side 5.

[0035] Here, the underside of the recessed grip 6 limits the installation space of the fan upwards.

[0036] The power converter weighs approximately 10 kg, but remains comparatively easy to handle thanks to the recessed grip 6 and the handle 7.

[0037] Referring to Fig.3, the power converter 1 has 5 low-voltage terminals 16 on the second side of the housing, which are used to connect 24V peripheral components.

Claims

[1] Power converter (1), comprising: - a housing (2), - wherein the housing (2) has a handle (7) on a first housing side (3), - wherein terminals (4) of the power converter (1) are provided on the first housing side (3), - wherein the housing (2) has a grip recess (6) on a second housing side (5) which is opposite the first housing side (3), - wherein the housing (2) has openings (11) on the first housing side (3), and - wherein the handle (7) has openings (12) on a mounting side (13) facing the first housing side (3) of the housing (2), which openings correspond to the openings (11) of the first housing side (3). [2] Power converter (1) according to claim 1, characterized by , that - the handle (7) simultaneously forms a support surface (8) for cables (9) leading to the terminals (4) of the power converter (1). [3] Power converter (1) according to claim 2, characterized by , that - the support surface (8) for the cables (9) has a number of openings (10), wherein the openings (10) are provided for fixing the cables (9), in particular by means of cable ties. [4] Power converter (1) according to one of the preceding claims, characterized by , that - the grip recess (6) has a rectangular cross-section. [5] Power converter (1) according to claim 4, characterized by , that - the grip recess (6) defines a cuboid volume. [6] Power converter (1) according to one of the preceding claims, characterized by , that - the grip recess (6) has a width in a range between 5 cm and 20 cm, and / or - the recessed grip (6) has a height in a range between 1.5 cm and 10 cm, and / or - the recessed grip (6) has a depth in a range between 1 cm and 10 cm. [7] Power converter (1) according to one of the preceding claims, characterized by , that - the power converter (1) has a fan (14), wherein an air flow caused by the fan (14) flows through openings (15) of the second housing side (5). [8] Power converter (1) according to claim 7, characterized by , that - the recessed grip (6) limits the installation space of the fan. [9] Power converter (1) according to one of the preceding claims, characterized by , that - the power converter (1) weighs more than 8 kg. [10] Power converter (1) according to one of the preceding claims, characterized by , that - the power converter (1) has low-voltage connections (16) on the second housing side (5).

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